# include <stdio.h>
int main() {

	int i,a,c;
	int b=0;
	
	printf("Please input c:");
	scanf("%d",&c);
	printf("Please input a:");
	scanf("%d",&a);
	
	 
   for (i=c;i<=a;i++)
  {

	
	if (i%4==0&&i%100!=0||i%400==0) 
	{
	b=b+1;
   
	printf("\nb=%d",b); }
  }
	return 0 ;
 }
